This keeps the behavior similar to the Disney BRDF, where 0.5
is neutral and lower/higher values respectively decrease/increase
the dielectric specular. But it's more correct in that it's not
an arbitrary scale on Fresnel, but rather adjusting the IOR.
Ref #99447
Ref #112848
Pull Request: https://projects.blender.org/blender/blender/pulls/112552
Enable visual keying of bones that are influenced by an IK constraint.
This wasn't possible before, as the visual keying system only checked
constraints on the bone itself, and not whether the bone was part of an
IK chain.
This commit introduces a new `bPoseChannel::constflag` value
`PCHAN_INFLUENCED_BY_IK` that is set whenever the pose bone is part of
an IK chain.
The `pchan->constflag` field is computed during depsgraph evaluation. If
the depsgraph is active, it is now also written back to the original
pchan, so that it can be used in the "should visual keying be used"
function.
Fixes: #76791 "Different results when keyframing visual transforms and
applying transforms manually on IK constraint". Note that visually
keying does *not* copy the visual pose to the current pose. Furthermore,
when visually keying only part of the IK chain, the result of
re-evaluating the IK constraint (for example by moving the scene forward
and then backward by one frame) may still produce a different result, as
the IK chain now has a different start orientation.
Note that commit explicitly does not cover Spline IK constraints. They
can introduce heavy shear, especially with the default settings, which
cannot be represented by keys on loc/rot/scale.
For historical reference: 876cfc837e
introduces the 'use visual keying' preference option, where Blender
automatically chooses whether or not to use visual keying. This is why
there is a function at all that determines whether to use visual keying
or not.
Rename the `bPoseChannel::flag` `PCHAN_HAS_TARGET` to `PCHAN_HAS_NO_TARGET`
as that is actually the meaning of the flag (in the majority of the code).
Since the flag was so confusingly named, there were some mixups in the
armature overlay drawing code as well, which have been fixed now too.
The Pixelate effect has an antialiasing switch that cleans up
pixels mostly, but still has some inbetween artifacts that are
a little frustrating to deal with. This makes it so that pixels are
completely hard-edged when AA is disabled.
Pull Request: https://projects.blender.org/blender/blender/pulls/112605
Blender 4.0 requires OpenGL 4.3 which always support SSBO's.
Platforms that don't support enough SSBO bind points will be marked
as unsupported.
Users who start Blender on those platforms will be informed via a
dialog. This PR also updates the `--debug-gpu-force-workarounds`
to match our minimum requirements. Note that some bugs are still
there that should be solved in other PRs:
* Workbench only renders the object using a unit matrix this is because
there is a bug in the workaround for shader_draw_parameters
* Navigating with middle mouse button is not working. Unsure what the
cause is, but might be a missing feature check in the OpenGL backend.
Related to #112224
Pull Request: https://projects.blender.org/blender/blender/pulls/112572
This implement the diffuse tracing as simple
screen-space ray trace. This is extremely inefficient
and should only be used for reference purpose.
The real screen space diffuse implementation will
be done in another PR.
Depends on #112507
Pull Request: https://projects.blender.org/blender/blender/pulls/112539
This allow to move the light evaluation up in the deferred pipeline and
avoid coupling two different steps into one. This add more flexibility
in the implementation of deferred lighting and indirect lighting
algorithms.
This splits the reflection probe evaluation to its own
shader since it is quite different now.
Pull Request: https://projects.blender.org/blender/blender/pulls/112507
This moves the pre-computation offline and store the pre-computed
table in the binary. The pre-computed tables are quite small and are
not a concern with respect to binary size increase.
This rewrites the precomputation to use manually fitted
approximations for both burley and random walk.
The approximations fix a discrepancy between cycles and EEVEE
SSS translucency look. The absolute maximum error is below 2%.
I believe better results could be achieved with automatic fitting
tools.
Note that Cycles Burley translucency profile has some issues as it
does not give a smooth profile. The profile is biased near the end
of the lower radii. For this reason, the fit was done on a white
diffuse with (1,1,1) radii which does not exhibit this artifact.
Note that while this adds the profile for random walk, it isn't
currently used because the profile type is not yet passed down
the deferred path.
The fitting data can be found attached to this PR.
Pull Request: https://projects.blender.org/blender/blender/pulls/112512
This allow to move the light evaluation up in
the deferred pipeline and avoid coupling two
different steps into one. This add more
flexibility in the implementation of
deferred lighting and indirect lighting
algorithms.
This splits the reflection probe evaluation
to its own shader since it is quite different
now.
A float array use different alignment and reservation rules on
GPU versus CPU. Before this change the _pad1 was aligned to 16 bytes as
it was defined as an array, but on CPU this alignment doesn't
happen.
This is fixed by using 3 floats in stead of a float array for padding.
Pull Request: https://projects.blender.org/blender/blender/pulls/112565
This finalize the implementation of the screen space tracing
for EEVEE-Next.
Refractive objects can now have screen space reflection too
and self reflect.
This keeps the feedback radiance buffer principle of the
Classic EEVEE so that we still get infinite bounces by default.
There are some conflict with refraction tracing and ambient
occlusion nodes. Materials using screen space refraction will
not be able to detect occlusion from any refractive surface using
screen space refraction including itself.
They also won't be visible to screen space reflections from other
materials *not* using screen space refraction.
This should be added to the list of limitations for now.
Note that the current approach to feed the radiance is to copy
the radiance buffer. This has the nice property of only containing
the currently rendered objects and not project transparent objects
or other non-yet rendered object onto the depth behind them.
Pull Request: https://projects.blender.org/blender/blender/pulls/112341
because it contains reflectance and transmittance, so BSDF would be a
morep proper name.
Also rename BSDF to BRDF at places where only reflectance is returned.
the `refract()` function require the relative IOR of the media where V
is in to the media where L is in. Because this only affects the
visibility term, the difference is quite small
* Fix#112284 and other non-reported sculpt-related regressions in the
new Workbench.
* Cleanup ObjectState setup.
* Update `sculpt_batches_get` to support getting per material batches
while passing SculptBatchFeatures.
* Make material indices 0 based in Workbench.
Pull Request: https://projects.blender.org/blender/blender/pulls/112344
- Adds tint control, which simulates volumetric absorption inside the coating.
This results in angle-dependent saturation and affects all underlying layers
(diffuse, subsurface, metallic, transmission). It provides a physically-based
alternative to ad-hoc effects such as tinted specular highlights.
- Renames the component from "Clearcoat" to "Coat", since it's no longer
necessarily clear now. This matches naming in e.g. other renderers or OpenPBR.
- Adds an explicit Coat IOR input, in preparation for future smarter IOR logic
around the interaction between Coat and main IOR. This used to be hardcoded
to 1.5.
- Removes hardcoded 0.25 weight multiplier, and adds versioning code to update
existing files accordingly. OBJ import/export still applies the factor.
- Replaces the GTR1 microfacet component with regular GGX. This removes a corner
case in the Microfacet code, solves #53038, and makes us more consistent with
other standard surface shaders. The original Disney BSDF used GTR1, but it
doesn't appear that it caught on in the industry.
Co-authored-by: Weizhen Huang <weizhen@blender.org>
Pull Request: https://projects.blender.org/blender/blender/pulls/110993
5cf7089e43 added the `BuiltinBits::LAYER` to shaders with a geometry
stage. This causes compilation errors when
`GLContext::layered_rendering_support` is false (otherwise the flag
does nothing).
This PR moves the `LAYER` flags to the `no_geom` shader versions and
adds a check to `ShaderCreateInfo::finalize()` to ensure the `LAYER` flag
is not used in shaders with a geometry stage.
Pull Request: https://projects.blender.org/blender/blender/pulls/112245
`overlay_edit_mesh_face` has an attribute for its vertex normals,
but only used in the vertex shader when it isn't a face shader.
Removing this attribute fixes some performance validation warnings
in the Vulkan backend.
Pull Request: https://projects.blender.org/blender/blender/pulls/112269
The `VIEWLAYER_PT_eevee_next_layer_passes_data` class name was
re-used by mistake for Workbench Next in ba982119cd,
and the actual EEVEE Next class was then removed in 678dc456e3.
This adds back the UI as it was, and the missing passes (Vector and
Position) it referenced.
Pull Request: https://projects.blender.org/blender/blender/pulls/112162
In image renders, after the first motion blur step,
non deformed geometry was being marked as deformed,
since all their geometry lengths are 0.
This caused velocity_local_pos_get to read wrong/unitialized values.
